From: James Ventre (messageboard@ventrefamily.com)
Date: Wed Apr 20 2005 - 14:37:50 GMT-3
Hardcoding trunks to "ON" doesn't turn off DTP.
Here is a port that has "switchport mode trunk"
Note the DTP packet count:
116813 packets received (0 good)
116813 packets dropped
0 nonegotiate, 0 bad version, 116813 domain mismatches,
SWITCH>sh dtp interface gigabitEthernet 1/0/28
DTP information for GigabitEthernet1/0/28:
TOS/TAS/TNS: TRUNK/ON/TRUNK
TOT/TAT/TNT: 802.1Q/802.1Q/802.1Q
Neighbor address 1: 000000000000
Neighbor address 2: 000000000000
Hello timer expiration (sec/state): 9/RUNNING
Access timer expiration (sec/state): never/STOPPED
Negotiation timer expiration (sec/state): never/STOPPED
Multidrop timer expiration (sec/state): never/STOPPED
FSM state: S6:TRUNK
# times multi & trunk 0
Enabled: yes
In STP: no
Statistics
----------
116813 packets received (0 good)
116813 packets dropped
0 nonegotiate, 0 bad version, 116813 domain mismatches,
0 bad TLVs, 0 bad TAS, 0 bad TAT, 0 bad TOT, 0 other
116813 packets output (116813 good)
116813 native, 0 software encap isl, 0 isl hardware native
0 output errors
0 trunk timeouts
2 link ups, last link up on Thu Mar 10 2005, 22:54:55
1 link downs, last link down on Thu Mar 10 2005, 22:54:55
James
Ken Bartlinski wrote:
Dennis,
You do not have to turn off DTP. You just use the "switchport trunk
encapsulation dot1q" command on the port in question to achieve this goal.
If you further wish to force the port to only trunk, turn off DTP using the
"switchport mode trunk" command.
Ken
-----Original Message-----
From: nobody@groupstudy.com [ mailto:nobody@groupstudy.com ] On Behalf Of
Dennis J. Hartmann
Sent: Wednesday, April 20, 2005 12:14 PM
To: ccielab@groupstudy.com Subject: Switchport nonegotiate / DTP
If I'm required to statically set all trunk ports to dot1q, I'll be
turning off DTP with the switchport nonegotiate command.
I didn't notice this in the NMC solutions. Any ideas?
Sincerely,
Dennis J. Hartmann
White Pine Communications
dh8@pobox.com
CCSI#23402/CCIP/CCNP/CCDP/CCNA/CCDA
Cisco IP Voice Support & Design Specialist
Cisco Optical, VPN & IDS Specialist
MCSE
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